The 2010 carbon black F10 is my daily driver - the wife drives the X6. I have not seen the sapphire black in person, but from what I have seen in photos and heard from others, they are different. Almost any large dealer will have both colors on various vehicles on their lot - I recommend you take a close look. The CB looks black in dim, low level light, but has dark blue sparkles in the daytime.
2011 F10 550i Carbon Black M-Sport, Black Dakota Leather, Premium 2, Sport Auto Transmission, Split rear Seats.
2013 X6 3.5 Space Gray, Sand Beige Leather, Y-spoke wheels